1882.] REV. O. p. CAMBRIDGE ON NEW ARANEIDEA. 429 



orange-yellow colour, excepting a large black central spot on the 

 sternum. The sides of the thorax are considerably rounded, and 

 the normal indentations marking off the caput from the thorax are 

 strongly marked. Along the median line of the caput are several 

 bristly hairs directed forwards. 



The eyes are very unequal in size for this family ; those of the 

 fore central pair are much the larger, and form a line longer than 

 those of the hind central pair, and have their visual axis directed 

 forwards and outwards ; these last are rather wider apart than each 

 is from the hind lateral on its side. 



The palpi are short, the cubital and radial joints exceedingly so. 

 The digital joint is large, and of an abnormal form, somewhat 

 rounded at its base ; it has its fore extremity considerably produced 

 into a rather narrow and tapering form ; its extremity is furcate, 

 one point of the furcation being longer than the other. The palpal 

 organs are rather complex and highly developed ; connected with 

 them is a tortuous, somewhat convoluted, pale-yellowish tapering 

 spine of immense length ; and its long slender filiform point extends 

 very prominently outwards. One corneous process of the palpal 

 organs is long, prominent, and tapering, and has its extremity, 

 which projects outwards, notched. 



The abdomen is of a pale-yellowish luteous hue, thinly clothed 

 with hairs ; its upper posterior extremity has a large black spot, on 

 each side of which below (towards the spinners) is another; two 

 others are placed (one on each side) towards the fore part of the 

 upperside ; and a sixth is underneath, just in front of the spinners. 

 The spinners are very short and compact. 



A single example of this remarkably distinct species was con- 

 tained in Mr. Traill's Amazon collection. 



Chrysso, g. n. 



Cephalothorax much like that of Theridion, small, somewhat 

 depressed, short-oval in form, with very slight lateral marginal con- 

 striction at caput. 



Eyes as in Theridion. 



Legs moderately long, slender, 1, 4, 2, 3, furnished with hairs 

 only. 



Falces small, not very strong, straight and vertical. 



Maxillce of moderate size, pointed at their inner extremities, and 

 inclined towards the labium, which is short and of a somewhat semi- 

 circular form. 



Abdomen large, the posterior extremity' (particularly in the female) 

 produced into a long and tapering continuation, varying, however, in 

 its length in different individuals. 



This genus is nearly allied to Argyrodes, appearing to form a 

 eonuecting link between it and Theridion. 



Chrysso albomaculata, sp. n. (Plate XXX. fig. 6.) 



Adult male, length 1| Hue ; female, 2^ lines. 



The whole of the fore part of this pretty little Spider is of an orange- 



